ALEXANDRIA, Va., July 14 -- United States Patent no. 12,678,542, issued on July 14.

"Polyethylenimine copolymer compositions and methods to enhance antiviral and antibacterial properties of medical devices and medical tools" was invented by Jianliang Gong (Hong Kong, Hong Kong) and Chun Yin Or (North Vancouver, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention offers compositions and methods of infusing antibacterial and antiviral polyethylenimine compounds into materials conventionally used for medical devices and medical tools, including such materials as vinyl, polyvinylchloride, latex, rubber, silicone and plastic materials, and thereby enhancing the safety and antiviral propert...